Whey Permeate Purification via Multi-Stage Ion Exchange Resins
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The dairy industry faces challenges in isolating and purifying components from whey permeate, particularly 3′-sialyl lactose, due to inefficiencies in existing methods that result in impure products and require additional clean-up steps.
Innovation Solution
A process involving a series of ion exchange resins, including weak and strong acid cation and anion resins, is used to demineralize whey, followed by elution with an appropriate eluant to isolate and purify 3′-sialyl lactose, optimizing its recovery and purity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single cation resin and a single anion resin are used to purify sialyl lactose, then the process is simpler, but the purity of the product is insufficient and additional clean-up steps are required
Solution Approach 1:
The patent divides the purification system into multiple resin columns with different selectivity characteristics. Specifically, it uses a first cation resin column, a first anion resin column, a second cation resin column, and a second anion resin column in sequence. Each column segment performs a specific purification function, collectively achieving high purity sialyl lactose separation without requiring additional clean-up steps
Solution Approach 2:
The patent assigns different resin types and selectivity characteristics to different positions in the purification sequence. The first cation resin has different properties than the second cation resin, and similarly for the anion resins. This local differentiation of resin quality allows each column to optimally address specific impurities at that stage of purification
2Quantity of substance
If strong anion resin is used to bind sialyl lactose, then the binding capacity is high, but the resin requires clean-up due to co-binding of other anions
Solution Approach 1:
The anion resin binding function is segmented into two separate anion resin columns positioned at different stages of the purification sequence. The first anion resin column operates under specific conditions to bind sialyl lactose with high capacity, while the second anion resin column provides additional purification. This segmentation allows the system to achieve both high binding capacity and high product purity
Solution Approach 2:
The patent introduces intermediate purification steps between the anion resin columns and uses buffer solutions as intermediaries to selectively elute sialyl lactose from the resin while leaving other anions bound. This intermediary approach allows the strong anion resin to function at high capacity while the elution process ensures high purity product recovery
3Manufacturing precision
If multiple series of ion exchange resins are used to demineralize whey, then the purity of sialyl lactose is improved, but the process complexity and cost increase
Solution Approach 1:
The patent designs the ion exchange resin system to perform multiple functions simultaneously. The same series of four resin columns performs demineralization, concentration, and purification functions in sequence. This multi-functionality reduces the need for separate processing units and justifies the increased device complexity by consolidating multiple purification objectives into a single integrated system
Solution Approach 2:
The patent establishes a continuous flow path through the four resin columns where whey undergoes sequential purification without interruption. The effluent from one column becomes the feed for the next, creating continuous useful action throughout the system. This continuity maximizes the purification efficiency of each resin column and achieves high overall purity without requiring repeated batch processing cycles
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This process effectively increases the 3′-sialyl lactose content in whey permeate, achieving high purity and recovery rates, reducing the organic load in effluent streams and enabling its use in pharmaceutical and food applications.
Implementation Method 1
contacting the whey with at least one series of ion exchange resins, said series comprising a first cation resin, a first anion resin, a second cation resin and a second anion resin to demineralise the whey
Data Source
AI summary
A process for the isolation and/or purification of a desired component, particularly 3′sialyl lactose, from whey, particularly cheese whey, comprising the steps of: optionally subjecting the whey to ultrafiltration to provide a protein concentrate and a whey permeate; contacting the whey or whey permeate with at least one series of ion exchange resins, said series comprising a first weak acid cation resin, a first weak base anion resin, a second strong acid cation resin, a second weak base anion resin to demineralize the whey permeate; contacting this demineralized permeate with two final ion exchange resins comprising a strong acid cation resin and a final weak base anion resin, wherein the desired component, such as 3′ sialyl lactose, is taken up on the final anion resin; and eluting the desired component from the final anion resin.